From owner-freebsd-hackers  Thu Nov 27 06:39:50 1997
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To: Dave Marquardt <marquard@zilker.net>
cc: freebsd-hackers@FreeBSD.ORG
Subject: Re: Adaptive scheduling 
In-reply-to: Your message of "26 Nov 1997 23:14:09 CST."
             <85g1oisyu6.fsf@localhost.zilker.net> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Thu, 27 Nov 1997 06:42:44 -0800
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>Charles Mott <cmott@srv.net> writes:
>> It is not that difficult to schedule outgoing packets, but incoming
>> traffic is difficult to control.  In the case of tcp streams, one
>> suggestion has been to rewrite the window value on the tcp packets so that
>> holding back ACKs will slow down the incoming stream after about two
>> packets or so. Additionally, it is possible to send icmp source quench
>> packets to try to slow down external sources.  I don't know that these
>> mechanisms will work very well, though.
>
>Does FreeBSD do anything with the IP Type of Service bits?

   Yes, both telnet and ftp set the TOS as appropriate.

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project